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#include "features.h" // for __weak
#include <errno.h> // for ERANGE, E2BIG, EACCES, EADDRINUSE, EADDRNOTAVAIL
#include <libc.h> // for __unused
#include <string.h> // for memcpy, size_t, strerror, strlen, locale_t
char *strerror(int errnum)
{
char *table[] = {
[0] = "No error information",
[EILSEQ] = "Illegal byte sequence",
[EDOM] = "Domain error",
[ERANGE] = "Result not representable",
[ENOTTY] = "Not a tty",
[EACCES] = "Permission denied",
[EPERM] = "Operation not permitted",
[ENOENT] = "No such file or directory",
[ESRCH] = "No such process",
[EEXIST] = "File exists",
[EOVERFLOW] = "Value too large for data type",
[ENOSPC] = "No space left on device",
[ENOMEM] = "Out of memory",
[EBUSY] = "Resource busy",
[EINTR] = "Interrupted system call",
[EAGAIN] = "Resource temporarily unavailable",
[ESPIPE] = "Invalid seek",
[EXDEV] = "Cross-device link",
[EROFS] = "Read-only file system",
[ENOTEMPTY] = "Directory not empty",
[ECONNRESET] = "Connection reset by peer",
[ETIMEDOUT] = "Operation timed out",
[ECONNREFUSED] = "Connection refused",
[EHOSTDOWN] = "Host is down",
[EHOSTUNREACH] = "Host is unreachable",
[EADDRINUSE] = "Address in use",
[EPIPE] = "Broken pipe",
[EIO] = "I/O error",
[ENXIO] = "No such device or address",
[ENOTBLK] = "Block device required",
[ENODEV] = "No such device",
[ENOTDIR] = "Not a directory",
[EISDIR] = "Is a directory",
[ETXTBSY] = "Text file busy",
[ENOEXEC] = "Exec format error",
[EINVAL] = "Invalid argument",
[E2BIG] = "Argument list too long",
[ELOOP] = "Symbolic link loop",
[ENAMETOOLONG] = "Filename too long",
[ENFILE] = "Too many open files in system",
[EMFILE] = "No file descriptors available",
[EBADF] = "Bad file descriptor",
[ECHILD] = "No child process",
[EFAULT] = "Bad address",
[EFBIG] = "File too large",
[EMLINK] = "Too many links",
[ENOLCK] = "No locks available",
[EDEADLK] = "Resource deadlock would occur",
[ENOTRECOVERABLE] = "State not recoverable",
[EOWNERDEAD] = "Previous owner died",
[ECANCELED] = "Operation canceled",
[ENOSYS] = "Function not implemented",
[ENOMSG] = "No message of desired type",
[EIDRM] = "Identifier removed",
[ENOSTR] = "Device not a stream",
[ENODATA] = "No data available",
[ETIME] = "Device timeout",
[ENOSR] = "Out of streams resources",
[ENOLINK] = "Link has been severed",
[EPROTO] = "Protocol error",
[EBADMSG] = "Bad message",
[EBADFD] = "File descriptor in bad state",
[ENOTSOCK] = "Not a socket",
[EDESTADDRREQ] = "Destination address required",
[EMSGSIZE] = "Message too large",
[EPROTOTYPE] = "Protocol wrong type for socket",
[ENOPROTOOPT] = "Protocol not available",
[EPROTONOSUPPORT] = "Not supported",
[ESOCKTNOSUPPORT] = "Type not supported",
[ENOTSUP] = "Not supported",
[EPFNOSUPPORT] = "Protocol family not supported",
[EAFNOSUPPORT] = "Address family not supported by protocol",
[EADDRNOTAVAIL] = "Address not available",
[ENETDOWN] = "Network is down",
[ENETUNREACH] = "Network unreachable",
[ENETRESET] = "Connection reset by network",
[ECONNABORTED] = "Connection aborted",
[ENOBUFS] = "No buffer space available",
[EISCONN] = "Socket is connected",
[ENOTCONN] = "Socket not connected",
[ESHUTDOWN] = "Cannot send after socket shutdown",
[EALREADY] = "Operation already in progress",
[EINPROGRESS] = "Operation in progress",
[ESTALE] = "Stale file handle",
[EUCLEAN] = "Data consistency error",
[ENAVAIL] = "Resource not available",
[EREMOTEIO] = "Remote I/O error",
[EDQUOT] = "Quota exceeded",
[ENOMEDIUM] = "No medium found",
[EMEDIUMTYPE] = "Wrong medium type",
[EMULTIHOP] = "Multihop attempted",
[ENOKEY] = "Required key not available",
[EKEYEXPIRED] = "Key has expired",
[EKEYREVOKED] = "Key has been revoked",
[EKEYREJECTED] = "Key was rejected by service",
};
if (errnum < 0 || (size_t)errnum >= sizeof(table) / sizeof(table[0]) ||
!table[errnum]) {
errno = EINVAL;
return NULL;
}
return table[errnum];
}
int strerror_r(int errnum, char *buf, size_t buflen)
{
const char *msg = strerror(errnum);
size_t msglen = strlen(msg) + 1;
if (buflen < msglen) {
return ERANGE;
}
memcpy(buf, msg, msglen);
return 0;
}
__weak char *strerror_l(int errnum, locale_t __unused locale)
{
return strerror(errnum);
}
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